Hint only :
1php balance to avoid error and do success registration.
Find promo pisonet and register to it.
Success registered! Web debugging proxy scans the cookies on the site. Find the cookie of the success registration promo. Find another promo again (opermax will do)
Copy it and paste on the cookie editor (inject)
Repeat until you rich!

*this is only a hint I don't do further detailed tutorial, it's up to you on how you do the trick, your style.

Hint only :
1php balance to avoid error and do success registration.
Find promo pisonet and register to it.
Success registered! Web debugging proxy scans the cookies on the site. Find the cookie of the success registration promo. Find another promo again (opermax will do)
Copy it and paste on the cookie editor (inject)
Repeat until you rich!

*this is only a hint I don't do further detailed tutorial, it's up to you on how you do the trick, your style.